I was browsing the special offer models at Hannants when I found this: http://www.hannants.co.uk/search/?FULL=8AMC7202 Named the 'Russian Missile 16 Ch' It looks to me like a souped-up version of the V1 - anybody know anything about this?
Its 16Kh/KhN Lastochka. Cruise missile from 50's apparently. Cancelled. Air launched. And yes, it was based on V-1. That what 15 min of intense googling revealed.
I bought Yefim Gordon's Soviet/ Russian Aircraft Weapons book last Friday - there's a good write up of that missile (including single-engine variants) if you want more information. Just let me know.